Wrench.



No. 824,558. PATENTED JUNE 26, 1906.

L. MAIER.

WRENCH. I

APPLICATION FILED OUT. 17, 1905.

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No. eeasse.

Specification of Letters Patent.

Patented June 26,1906.

Application filed October 17, 1905. Serial No. 283,149.

To all whom/it may concern- Be it known that I, Lnwrs MAIER, a citizen of the United States of America, residing at Grand Ledge, in the county of Eaton and State of Michigan, have invented new-and useful Improvements in- Wrenches, of which the followlngis a specification.

This invention relates to wrenches, and

has for its objects to produce a comparatively simple inexpensive device of this character in which the movable jaw may be quickly and conveniently adjusted and one in which the jaw may be readily and securely locked in 1ts adjusted positions.

With these. and other objects in view the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is a side elevation of a wrench embodying the invention. Fi 2 is an edge view 0 the same. Fig. 3 1s a top plan view of the movable jaw removed from the shank. Fig. 4 is a section taken on the line 4 4 of Fig. 3. Fig. 5 is a section taken on the line'5 5 of Fig. 1. gig. 6 is an end elevation of the locking mem- Referring to the drawings, 1 designates a shank, provided at its forward end with a fixed head or jaw 2 and havin on its lower edge teeth 3, preferably in th threaded screw, as seen in F' 2, there being slidably disposed upon the s ank a movable head or jaw 4, having-a rearwardly-projecting portion or arm 5, provided at its rear terminal with a collar 6, formed to embrace the shank.

Carried by the movable j M74 and j ournaled at its ends in suitable bearings provided in the latter and in the collar 6 is a lockin member 7, preferably in the form of a screw havingi teeth 8, extending partially therearoun and presenting a smooth ortion or face 9 at one side of the screw, t ere being fixed on the outer end of the screw 7 an operating member or arm 10, having at its outer terminal a right-angularly-projecting po'rtlon or finger 1 1, which normally engages over the up er edge of the shank 1. I

ractice the locking member 7 normally stand in position with 1ts threads or teeth 8 j n en agement with the'threads or teeth 3 on the s ank 1 and the arm 10 lying agamst the e form of a- {adjacent side face of the shank. Under tating the locking member for movlng its threads out of engagement with the threads 3 and bringing the smooth or non-threaded portion'9 of the lockingsmember into register with the screw 3, whereupon the jaw may be readily moved to the desired osition and thereafter locked by again turmng the screw 7 to normal position. It is to be particularly observed that under this construction the jaw 4 may be conveniently released to permit rapid relative adjustment of the jaws and thereafter securely locked in its adjusted po: sitions.

From the foregoing it is apparent that I produce a simple device admirably adapted or the attainment of the ends in view, it be- 'in understood that. in attaining these'ends mlnor changes in the details herein set forth may be resorted to without departing from the spirit of the invention.

Having thus fully described my invention, what I claim as new is In-a wrench, a shank provided with teeth and carrying a fixed jaw, a relatively movable jaw mounted on the shank and havin a rearwardly-plrojecting arm carrying a collar m ng t terminally journaled in the movable jaw and said screw eing provided with teethadapted having a smooth portion designed for nonengagement with the shank, an. operatingarm fixed upon the rear endof the lockingnon-enga'ging positions, and aifinger med upon the operating-arm for frictional engagement with the upper edges of the shank to hold thescrew in normal position with its presence of two witnesses.

. LEWIS MAIER. 'Witnesses:

RAYMOND A. ,LATTING,

FRED. Voe'r.

lndicated bythe arrow in Fig. 6, thereby rofor engagement with those on the shank and,

threads engaged with those on'the shank, said e shank, a rotary locking-screw collar at a oint between the arm and shank,

screw for rotating the same to engaging or 

